FR2557970B1 - ANGULAR LASER SPEED SENSOR AND RING LASER GYROSCOPE - Google Patents

ANGULAR LASER SPEED SENSOR AND RING LASER GYROSCOPE

Info

Publication number
FR2557970B1
FR2557970B1 FR8500176A FR8500176A FR2557970B1 FR 2557970 B1 FR2557970 B1 FR 2557970B1 FR 8500176 A FR8500176 A FR 8500176A FR 8500176 A FR8500176 A FR 8500176A FR 2557970 B1 FR2557970 B1 FR 2557970B1
Authority
FR
France
Prior art keywords
laser
speed sensor
angular
gyroscope
ring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR8500176A
Other languages
French (fr)
Other versions
FR2557970A1 (en
Inventor
Graham Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northrop Grumman Guidance and Electronics Co Inc
Original Assignee
Litton Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Litton Systems Inc filed Critical Litton Systems Inc
Publication of FR2557970A1 publication Critical patent/FR2557970A1/en
Application granted granted Critical
Publication of FR2557970B1 publication Critical patent/FR2557970B1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C19/00—Gyroscopes; Turn-sensitive devices using vibrating masses; Turn-sensitive devices without moving masses; Measuring angular rate using gyroscopic effects
    • G01C19/58—Turn-sensitive devices without moving masses
    • G01C19/64—Gyrometers using the Sagnac effect, i.e. rotation-induced shifts between counter-rotating electromagnetic beams
    • G01C19/66—Ring laser gyrometers
    • G01C19/68—Lock-in prevention
    • G01C19/70—Lock-in prevention by mechanical means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Gyroscopes (AREA)
  • Lasers (AREA)
FR8500176A 1984-01-09 1985-01-08 ANGULAR LASER SPEED SENSOR AND RING LASER GYROSCOPE Expired FR2557970B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56907984A 1984-01-09 1984-01-09

Publications (2)

Publication Number Publication Date
FR2557970A1 FR2557970A1 (en) 1985-07-12
FR2557970B1 true FR2557970B1 (en) 1988-11-25

Family

ID=24274019

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8500176A Expired FR2557970B1 (en) 1984-01-09 1985-01-08 ANGULAR LASER SPEED SENSOR AND RING LASER GYROSCOPE

Country Status (9)

Country Link
JP (1) JPS60160677A (en)
CA (1) CA1252551A (en)
DE (1) DE3500044A1 (en)
FR (1) FR2557970B1 (en)
GB (2) GB2152739B (en)
IL (1) IL73151A (en)
IT (1) IT1181841B (en)
NO (1) NO844141L (en)
SE (1) SE458722B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9115538D0 (en) * 1991-07-18 1991-09-04 Secr Defence Dither generation for ring laser gyroscopes
US5359413A (en) * 1992-01-13 1994-10-25 Kearfott Guidance And Navigation Corporation System for substantially eleminating lock-in in a ring laser gyroscope

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4152071A (en) * 1976-08-02 1979-05-01 Honeywell Inc. Control apparatus
US4281930A (en) * 1978-12-18 1981-08-04 Litton Systems, Inc. Laser gyro with phased dithered mirrors
JPS5628036A (en) * 1979-08-14 1981-03-19 Toyota Motor Corp Tandem brake oil-hydraulic controller having bypass means
US4410276A (en) * 1981-06-15 1983-10-18 The Singer Company Ring laser gyroscope with doppler mirrors
US4653919A (en) * 1982-02-08 1987-03-31 Sundstrand Optical Technologies, Inc. Laser gyro with dithered mirrors and current dither
US4551021A (en) * 1982-03-01 1985-11-05 Honeywell Inc. Discriminant apparatus for laser gyros
US4824252A (en) * 1982-06-25 1989-04-25 Honeywell Inc. Laser gyro system
ZA844479B (en) * 1983-06-20 1985-04-24 Sunstrand Optical Technologies Downhole ring laser gyro

Also Published As

Publication number Publication date
IT8547526A0 (en) 1985-01-07
IT1181841B (en) 1987-09-30
CA1252551A (en) 1989-04-11
IL73151A (en) 1989-02-28
GB2185147B (en) 1987-11-25
SE8500057D0 (en) 1985-01-07
IT8547526A1 (en) 1986-07-07
SE458722B (en) 1989-04-24
DE3500044A1 (en) 1985-07-18
GB2152739A (en) 1985-08-07
FR2557970A1 (en) 1985-07-12
GB8630989D0 (en) 1987-02-04
GB2152739B (en) 1987-11-25
JPS60160677A (en) 1985-08-22
GB2185147A (en) 1987-07-08
NO844141L (en) 1985-07-10
SE8500057L (en) 1985-07-10
GB8430489D0 (en) 1985-01-09

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Legal Events

Date Code Title Description
ST Notification of lapse